COMPARISON OF CURRENT OPACITYREQUIREMENTS WITH PREVIOUS REQUIREMENTS (prior to 5/17/10)1CURRENT REQUIREMENTS (effective 5/17/10) PREVIOUS REQUIREMENTS (prior to 5/17/10)COMAR 26.11.01.01 DefinitionsA. In this subtitle, the following terms have the meanings indicated.A. In this subtitle, the following terms have the meanings indicated.B. Terms Defined.Amended:(9) "Continuous emission monitor (CEM)" means a system of instruments installed, operated, andcalibrated in accordance with the procedures in this subtitle to continuously measure and record the emission rateor concentration of a substance in a gas stream.New:(9-1) "Continuous opacity monitor (COM)" means a system of instruments installed, operated, andcalibrated in accordance with the procedures in this subtitle to continuously measure and record the opacity ofemissions as six-minute averages of notgreater than 15 second increments.C. — D.IdenticalB. Terms Defined.(9) "Continuous emission monitor (CEM)" means a system of instruments installed,operated, and calibrated in accordance with theprocedures in this subtitle to continuouslymeasure and record the opacity, emission rate, or concentration of a substance in a gasstream.C. — D.IdenticalCOMAR 26.11.01.05 Records and InformationA — B IdenticalNewC. Whenever a provision in this subtitle requires submission or reporting of test results, reports, or otherinformation to the Department, unless otherwisespecified, the information shall be submitted to:Program ManagerAir Quality Compliance ProgramMaryland Department of the Environment1800 Washington Boulevard, Suite 715Baltimore, Maryland 21230410-537-4225NewD. Unless otherwise specified, all records, documentation or other information required by this subtitle,shall be maintained on-site and made available to the Department upon request.A.—B. IdenticalCOMAR 26.11.01.10 Continuous Emission Monitoring RequirementsALL NEWA. Applicability and Exceptions.(1) The provisions of this regulation apply to:A. Applicability and Exceptions.(1) The provisions of this regulation apply to a person that owns or operates any fuelburning equipment burning coal or fuel oil that has a rated heat input capacity of 250 millionBtu per hour or greater.(2) A person subject to this regulation may also be subject to the requirements of 40 CFRCOMPARISON OF CURRENT OPACITYREQUIREMENTS WITH PREVIOUS REQUIREMENTS (prior to 5/17/10)2CURRENT REQUIREMENTS (effective 5/17/10) PREVIOUS REQUIREMENTS (prior to 5/17/10)(a) Fuel burning equipment burning coal, fuel oil, tars, or waste combustible fluid at any timeand that has a rated heat input capacity of 250 million Btu per hour or greater;(b) Fuel burning equipment burning coal with a rated heat input capacity of 100 million Btu perhour or greater but less than 250 million Btu per hour and was constructed on or before June 19, 1984;(c) A cement kiln;(d) A fluidized bed combustor of any size; and(e) A municipal waste combustor with a burning capacity greater than 35 tons per day.(2) The owner or operator of an installation subject to this regulation may also be subject to therequirements of 40 CFR Parts 60 and 75, as amended.(3) This regulation does not apply to fuel burning equipment that:(a) Burns only distillate fuel oil or a mixture of gas and distillate fuel oil;(b) Is able to comply with the applicable particulate matter and opacity emission limitationswithout using particulate matter control equipment; and(c) Has never been found in a final order tobe in violation of any visible emissions standard.(4) The owner or operator of fuel burning equipment subject to this regulation may, with approval by theDepartment, discontinue use of a COM only in accordance with the provisions in COMAR 26.11.09.05C.B. General Requirements for COMs.(1) The owner or operator of an installation subject to this regulation shall:(a) Install and continuously operate a COM that complies with a plan approved by theDepartment and EPA in accordance with §B(1)(b) of this regulation; and(b) Before installing a COM, submit to the Department for approval, a plan containing the COMdesign specifications, proposed location, and a description of a proposed alternative measurement method60 which is incorporated by reference, and 40 CFR 75.(3) A CEM is not required for fuel burning equipment that:(a) Burns only distillate fuel oil or a mixture of gas and distillate fuel oil;(b) Is able to comply with the applicable particulate matter and opacity regulationswithout utilization of particulate matter control equipment; and(c) Has never been found in a final order to be in violation of any visible emissionstandard.B. Monitoring Requirements.(1) Except as provided in § A of this regulation, a person owning or operating fuelburning equipment with a heat input capacity of 250 million Btu per hour or greater andburning coal or fuel oil shall install and operate a CEM to measure and record opacity.(2) Any CEM that is required by this regulation shall be operated, maintained, andcalibrated to provide continuous valid data for each operating day, except that data is notrequired to be provided during:(a) The time required under an approved quality assurance plan to performadjustments, checks, calibrations, and scheduled maintenance; and(b) CEM equipment malfunctions lasting not more than 2 hours per operating day.(3) Except as otherwise approved by the Department, a person who reports a CEM systemdowntime in accordance with § G(1) of this regulation may be required to use an alternativemonitoring method approved by the Department.C. General CEM Installation Requirements.(1) A person subject to this regulation shall submit a CEM plan containing the CEMdesign specifications, proposed location, and a description of the proposed alternativemeasurement method required by Regulation .11B(7) of this chapter to the Department forapproval before installation of the CEM.COMPARISON OF CURRENT OPACITYREQUIREMENTS WITH PREVIOUS REQUIREMENTS (prior to 5/17/10)3CURRENT REQUIREMENTS (effective 5/17/10) PREVIOUS REQUIREMENTS (prior to 5/17/10)consisting of a schedule for utilizing the EPA Reference Method 9 observational procedures.(2) The Department shall submit theplan to EPA for review and approval.(3) A COM shall comply with the applicable requirements in 40 CFR Part 51, Appendix P, Sections 3.3—3.9, as amended, which is incorporated by reference.(4) The owner or operator of fuel burning equipment that is required by this regulation to install andoperate a COM is subject to the provisions in COMAR 26.11.09.05.C. Certification and Quality Assurance Procedures.(1) All certification testing, including certification performance tests and audits, shall be performed inaccordance with 40 CFR Part 60, Appendix B, as amended, which is incorporated by reference.(2) For fuel burning equipment subject to the federal Acid Rain Program, all certification testing,including certification performance tests and audits, shall be performed in accordance with 40 CFR Part 75,Appendix A, as amended.(3) Certification testing shall be repeated when the Department determines that the data are invalidbecause of component replacement or other conditions that affect the accuracy of generated data.(4) The owner or operator that is required toperform a certification performance test shall:(a) At least 60 days before the test, submit a test protocol to the Department for review andapproval;(b) Schedule the test at a reasonable time and notify the Department at least 10 days before thetest is to be conducted; and(c) Submit the test results to the Department not later than 45 days after the completion of thetest.(5) Fuel burning equipment subjectto the COM requirements in COMAR 26.11.09 shall meet the qualityassurance procedures contained in Technical Memorandum 90-01 "Continuous Emission Monitoring (CEM)(2) A person who is required by this regulation to install a CEM shall comply with theapplicable requirements in 40 CFR Part 51, Appendix P, § 3.3--3.8, which is incorporated byreference, and if an alternative procedure is tobe used, in § 3.9. Alternative procedures shallbe submitted to the U.S. EPA for approval.D. CEM Installation and Certification Schedules.(1) A person subject to this regulation or Regulation .11 of this chapter shall have allrequired CEM equipment installed, operating,maintained, calibrated, and certified not laterthan 12 months after the effective date of this regulation unless an alternative date is specifiedin an approved plan for compliance.(2) Except as provided in §D(4) of this regulation, all certification testing, includingcertification performance tests and audits, shallbe performed in accordance with 40 CFR Part60, Appendix B, which is incorporated by reference.(3) All certification testing, including certification performance tests and audits, forsources subject to 42 U.S.C. 7401-----7671q, shall be performed in accordance with 40 CFRPart 75, Appendix A.(4) A person required to perform a certification performance test shall:(a) Submit a test protocol to the Department at least 60 days before the test for reviewand approval by the Department;(b) Schedule the test at a reasonable time and notify the Department at least 10 daysbefore the test is to be conducted; and(c) Submit the test results to the Department not later than 45 days after the completionof the test.E. Quality Assurance Procedures for OpacityMonitors. An opacity monitor required by thisregulation or Regulation .11 of this chaptershall meet the quality assurance proceduresestablished in the Department's Air Management Administration Technical Memorandum 90-01 "Continuous Emission Monitoring (CEM) Policies and Procedures" (October, 1990),which is incorporated by reference.F. Use of CEM Data. Except as provided inRegulation .11D(1) of this chapter, an opacityCEM installed pursuant to this regulation shall be used as an indication of whether properCOMPARISON OF CURRENT OPACITYREQUIREMENTS WITH PREVIOUS REQUIREMENTS (prior to 5/17/10)4CURRENT REQUIREMENTS (effective 5/17/10) PREVIOUS REQUIREMENTS (prior to 5/17/10)Policies and Procedures," Part II Quality Assurance Requirements for Continuous Opacity Monitoring Systems.D. Record Keeping and Reporting Requirements.(1) System Downtime Reporting Requirements.(a) All COM downtime that lasts or is expected to last more than 24 hours shall be reported tothe Department by telephone before 10 a.m. of the first regular business day following the first day on whichdowntime occurs.(b) The COM downtime report shall include the reason, if known, for the breakdown and theestimated period of time that the COM will be down. The owner or operator shall notify the Department bytelephone when the COM has met performance specificationsfor accuracy, reliability, and durability of acceptablemonitoring systems, as provided in 40 CFR Part 51 Appendix P, and is producing data.(c) Except as otherwise approved by theDepartment and the EPA, a COM shall operate incompliance with the requirements of §B(2) of this regulation and collect data for at least 95 percent of the source'soperating time during any calendar quarter. The alternative measurement plan required in §B(1)(b) of thisregulation shall be used at all times when the COM fails to conform to performance standards required by §B(2) ofthis regulation during data collection.(2) Data Reporting Requirements.(a) A COM shall automatically reduce all data to six-minute block averages calculated from 24or more equally spaced data points.(b) All COM data shall be reported in a format approved by the Department.(c) A quarterly summary report shall be submitted to the Department not later than 30 daysfollowing each calendar quarter. The report shall be in a format approved by the Department, and shall includethe following:(i) The cause, time periods, and the opacity of all emissions which exceed theapplicable quarterly, daily and hourly emission standards as provided in COMAR 26.11.09.05A(4);(ii) The COM and installation downtimes, including the time and date of the beginningmaintenance and operating procedures are being utilized by source operators to maintainemission levels at or below emission standards.G. Record Keeping and Reporting Requirements.(1) CEM System Downtime Reporting Requirements.(a) All CEM system downtime that lasts or is expected to last more than 24hours shall be reported to the Department by telephone before 10 a.m. of the first regularbusiness day following the breakdown.(b) The system breakdown report required by § G(1)(a) of this regulationshall include the reason, if known, for the breakdown and the estimated period of time that theCEM will be down. The owner or operator of the CEM shall notify the Department bytelephone when an out-of-service CEM is back in operation and producing valid data.(2) CEM Data Reporting Requirements.(a) An opacity CEM shall automatically reduce all data to 6-minute blockaverages calculated from 36 ormore equally spaced data points.(b) All test results shall be reportedin a format approved by the Department.(c) Certification testing shall be repeated when the Department determinesthat the CEM data may be invalid because ofcomponent replacement or other conditions thataffect the quality of generated data.(d) A quarterly summary report shall be submitted to the Department notlater than 30 days following each calendar quarter. The report shall be in a format approvedby the Department, and shall include the following:(i)The cause, time periods, and magnitude of all emissions whichexceed the applicableemission standards;(ii) The source downtime including the time and date of thebeginning and end of each downtime period and whether the source downtime wasplanned or unplanned;COMPARISON OF CURRENT OPACITYREQUIREMENTS WITH PREVIOUS REQUIREMENTS (prior to 5/17/10)5CURRENT REQUIREMENTS (effective 5/17/10) PREVIOUS REQUIREMENTS (prior to 5/17/10)and end of each downtime period, and whether the downtime was scheduled;(iii) The cause of all COM downtime;(iv) The total operating time for the quarter, and the total time and percent of theoperating time during the quarter that excess emissions occurred, and the percentage of COM downtime, duringthe calendar quarter;(v) Quarterly quality assurance activities;(vi) Daily calibration activities that include reference values, actual values, absolute orpercent of span differences, and drift status;(vii) Other information that the Department determines is necessary to evaluate thedata or to ensure thatcompliance is achieved.E. All information required by this regulation to be maintained or reported to the Department shall be retainedand made available for review by the Department for a minimum of 5 years from the time the report is submitted.F. Technical Memorandum. Fuel burning equipment subjectto the COM requirements in COMAR 26.11.09.05 isnot subject to the COM requirements contained in Technical Memorandum 90-01 "Continuous EmissionMonitoring (CEM) Policies and Procedures," except for Part II Quality Assurance Requirements for ContinuousOpacity Monitoring Systems.(iii) The time periods and cause of all CEM downtime includingrecords of any repairs, adjustments, or maintenance that may affect the validity of emissiondata;(iv) Quarterly totals of excess emissions, installation downtime,and CEM downtime during the calendar quarter;(v) Quarterly quality assurance activities; and(vi) Daily calibration activities that include reference values, actualvalues, absolute or percent of spandifferences, and drift status; and(vii) Other information required by the Department that isdetermined to be necessary to evaluate the data, to ensure that compliance is achieved, or todetermine the applicability of this regulation.(e) All information required by this regulation to be reported to theDepartment shall be retained and made available for review by the Department for aminimum of 2 years from the time the report is submitted.COMAR 26.11.01.11 Continuous Emission Monitoring RequirementsALL NEWA. Applicability and Exemptions.(1) The provisions of this regulation apply to:(a) Fuel-burning equipment burning coal that has a rated heat input capacity of 100 million Btuper hour or greater;.11 Additional CEM Installation Requirements.A. Applicability and Exemptions(1) The provisions of this regulation apply to a person that owns oroperates any:(a) Fuel-burning equipment burning coal, residual fuel oil, tars, orwaste combustible fluids, and that has a rated heat input capacity of 100 million Btu per houror greater;COMPARISON OF CURRENT OPACITYREQUIREMENTS WITH PREVIOUS REQUIREMENTS (prior to 5/17/10)6CURRENT REQUIREMENTS (effective 5/17/10) PREVIOUS REQUIREMENTS (prior to 5/17/10)(b) Municipal waste combustors with a burning capacity greater than 35 tons per day;(c) Fluidized bed combustors; and(d) Kraft pulp mills.(2) An owner or operator that is required to install a CEM under any federal requirement is also subjectto all of the provisions of this regulation.B. General Requirements for CEMs.(1) An owner or operator subject to this regulation shall:(a) Before installing a CEM, submit to the Department, for approval by the Department andEPA, a plan containing the CEM design specifications,proposed location, and a description ofa proposedalternative measurement method; and(b) Install and operate a CEM in accordance with the plan approved by the Department andEPA under the provisions of §B(1)(a) of this regulation.(2) The owner or operator of fuel-burning equipment burning coal, with a heat input capacity of 100million Btu per hour or greater, shall install CEMs to measure and record sulfur dioxide, nitrogen oxide, eitheroxygen or carbon dioxide, and flow.(3) The owner or operator of:(a) A municipal waste combustor (MWC) shall install a CEM in accordance with therequirements in COMAR 26.11.08.07 or 26.11.08.08, as applicable;(b) A Kraft pulp mill shall install a CEM to measure and record process total reduced sulfur inaccordance with COMAR 26.11.14.05; and(c) A fluidized bed combustor of any size shall install CEMs to measure sulfur dioxide, nitrogenoxide and either oxygen or carbon dioxide.(4) Except as otherwise approved by the Department, if the owner or operator is unable to obtain(b) Coke oven combustion stack;(c) Municipal waste combustor with a burning capacity greaterthan 50 tons per day;(d) Portland cement plant kiln;(e) Fluidized bed combustor; or(f) Kraft pulp mill.(2) Installations that are requiredto install a CEM under 40 CFR 60 arealso subject to all of the provisions of this subtitle.(3) The provisions of Regulation .10C-----G of this chapter apply to aperson that is subject to this regulation.B. Additional Monitoring Requirements.(1) A person owning or operating fuel-burning equipment with a heat inputcapacity of 250 million Btu per hour or greater and burning coal shall install CEMs tomeasure and record sulfur dioxide and either oxygen or carbon dioxide.(2) A person owning or operating the equipment listed below shall install aCEM for opacity:(a) Coke oven combustion stacks;(b) Fuel-burning equipment with a heat input capacity of 250million Btu per hour or greater that burns tars or waste combustible fluids at any time;(c) Fuel-burning equipment witha heat input capacity of 100million Btu per hour or greater but less than 250 million Btu per hour that burns coal and wasconstructed before June 19, 1984; and(d) Portland cement plant kilns.(3) A person who owns or operates a municipal waste combustor (MWC)shall install a CEM in accordance with the requirements in COMAR 26.11.08.COMPARISON OF CURRENT OPACITYREQUIREMENTS WITH PREVIOUS REQUIREMENTS (prior to 5/17/10)7CURRENT REQUIREMENTS (effective 5/17/10) PREVIOUS REQUIREMENTS (prior to 5/17/10)emissions data from CEMs because of a malfunction of the CEM for more than 2 hours in duration, the owner oroperator shall use the alternative measurement method approved by the Department and EPA.C. Quality Assurance for CEMs. A CEM used to monitor a gas concentration shall meet the quality assurancecriteria of 40 CFR Part 60, Appendix F, as amended, which is incorporated by reference, or, if applicable, thequality assurance criteria of 40 CFR Part 75, Appendix B, as amended.D. Monitoring and Determining Compliance.(1) General. A CEM required by this regulation is the primary method used by the Department todetermine compliance or non-compliance with the applicable emission standards established in any permit orapproval, administrative or court order, Certificate of Public Convenience and Necessity, or regulation in thissubtitle.(2) Data Reduction. A CEM used to monitor a gas concentration shall record not less than four equallyspaced data points per hour and automatically reduce data in terms of averaging times consistent with theapplicable emission standard.(3) Technical Memorandum. Exceptfor fuel burning equipment subject to the COM requirements inCOMAR 26.11.09.05, use of COMs andCEMs for enforcement purposes shall be as specified in the Department'sAir Management Administration Technical Memorandum 90-01 "Continuous Emission Monitoring (CEM) Policiesand Procedures," which is incorporated by reference.(4) A person who owns or operates akraft pulp mill shall install a CEM tomeasure and record process total reduced sulfur, in accordance with COMAR 26.11.14.05.(5) A person who owns or operates a fluidized bed combustor of any sizeshall install CEMs to measure opacity, sulfur dioxide, and either oxygen or carbon dioxide.(6) Except as otherwise approved by the Department, when a person isunable to obtain emissions data because ofCEM malfunction of more than 2 hours induration, the person shall use an alternative method approved by the Department. A personshall include a description of the proposed alternative method in the CEM plan required byRegulation .10C(1) of this chapter.(7) A person who is required by this regulation or Regulation .10 of thischapter to install a CEM shall install data telemetry for all required CEMs. This system shallbe designed and installed in accordance with specifications approved by the Department. Thesystem shall be operational by the date specified in Regulation .10D(1) of this chapter.C. Quality Assurance for Additional CEMs. A CEM used to monitor a gasconcentration shall meet the quality assurance criteria of 40 CFR Part 60, Appendix F, whichis incorporated by reference, or for sources subject to 42 U.S.C. 7401-----7671q, the qualityassurance criteria of 40 CFR Part 75, Appendix B. The Department may approve equivalentprocedures to comply with the requirements of this regulation.D. Monitoring and Determining Compliance for Additional CEMs.(1) General. A CEM required by thisregulation or Regulation .10 of thischapter shall be one of the methods used by the Department to determine compliance with theapplicable emission standards established in any permit or approval, administrative or courtorder, Certificate of Public Convenience and Necessity, or regulation in this subtitle.(2) Technical Memorandum. Use of CEMs for enforcement purposes shallbe as specified in the Department's Air Management Administration Technical Memorandum90-01 "Continuous Emission Monitoring (CEM) Policies and Procedures", which isincorporated by reference in Regulation .10E of this chapter.(3) Data Reduction. A person required to install a CEM to monitor a gasconcentration shall equip the CEM to record not less than four equally spaced data points perhour and to automatically reduce data in terms of averaging times consistent with theapplicable emission standard.COMPARISON OF CURRENT OPACITYREQUIREMENTS WITH PREVIOUS REQUIREMENTS (prior to 5/17/10)8CURRENT REQUIREMENTS (effective 5/17/10) PREVIOUS REQUIREMENTS (prior to 5/17/10)COMAR 26.11.09.01 DefinitionsNew Definitions:(1-1) "Capacity factor" means:(a) The ratio between the actual heat input to fuel burning equipment from the fuels burned during a yearand the potential heat input if it had been operating for 8,760 hours during the year at the maximum steady statedesign heat input capacity; or(b) The ratio of the unit's actual annual electric output, in megawatt hours, to the unit's name platecapacity multiplied by 8,760 hours.(c) For the purpose of this chapter, the selected method of determining the capacity factor of a unit shallapply continuously and is determined on a monthly rolling basis for each consecutive 12-month period.(d) When either the procedure in §B(1-1)(a) or (b) of this regulation is selected to determine the capacityfactor of a unit, that same procedure shall apply for that unit.(11-1) "Operating time" means, for the purpose of determining compliance or non-compliance with this chapter,the actual time in hours that an affected unit operates, beginning when operation of the draft fans is establishedand ending when feed of the primary fuel to the combustion chamber is discontinued.Did not have definitions for "Capacity factor" or "Operating time"COMAR 26.11.09.05 Visible EmissionsA. Fuel Burning Equipment.Identical:(1) Areas I, II, V, and VI. In Areas I, II, V, and VI, a person may not cause or permit the discharge ofemissions from any fuel burning equipment, other than water in an uncombined form, which is greater than 20percent opacity.(2) Areas III and IV. In Areas III and IV, a person may not cause or permit the discharge of emissionsfrom any fuel burning equipment, other than water in an uncombined form, which is visible to human observersexcept that, for the purpose of demonstrating compliance using COM data, emissions that are visible to ahuman observer are those that are equalto or greater than 10 percent opacity.A. Fuel Burning Equipment.(1) Areas I, II, V, and VI. In Areas I, II, V, and VI, a person may not cause or permitthe discharge of emissions from any fuel burning equipment, other than water in anuncombined form, which is greater than 20 percent opacity.(2) Areas III and IV. In Areas III and IV, a person may not cause or permit thedischarge of emissions from any fuel burning equipment, other than water in an uncombinedform, which is visible to human observers.(3) Exceptions. Section A(1) and (2) of this regulation do not apply to emissionsCOMPARISON OF CURRENT OPACITYREQUIREMENTS WITH PREVIOUS REQUIREMENTS (prior to 5/17/10)9CURRENT REQUIREMENTS (effective 5/17/10) PREVIOUS REQUIREMENTS (prior to 5/17/10)Identical(3) Exceptions. Section A(1) and (2) of this regulation do not apply to emissions during load changing,soot blowing, startup, or adjustments or occasional cleaning of control equipment if:(a) The visible emissions are notgreater than 40 percent opacity; and(b) The visible emissions do not occur for more than 6 consecutive minutes in any sixty minuteperiod.All New:(4) Fuel Burning Equipment Required to Operate a COM. The owner or operator of fuelburning equipment that is subject to the requirement to install and operate a COM shall demonstrate compliancewith the applicable visible emissions limitation specified in §A(1) and (2) of this regulation as follows:(a) For units with a capacity factor greater than 25 percent, until December 31, 2009,compliance is achieved if visible emissions do not exceed the applicable visible emissions limitation in §A(1) and(2) of this regulation for more than 4 percent of the unit's operating time in any calendar quarter, during whichtime visible emissions:(i) Do not exceed 40.0 percent opacity, except for 5.0 hours or 0.5 percent of the unit'soperating time, whichever is greater;(ii) Do not exceed 70.0 percent opacityfor more than four (4) 6-minute periods, exceptthat coal-fired units equipped withelectrostatic precipitators may exceed 70.0percent opacity for no more than2.2 hours; and(iii) On any calendar day, do not exceed the applicablevisible emissions limitation in§A(1) and (2) of this regulation formore than 4.1 hours, during which timevisible emissions do not exceed 40.0percent opacity for more than 1.4 hours and do not exceed 70.0 percent opacity for more than two (2) six-minuteperiods;(b) For units with a capacity factor greater than 25 percent, beginning January 1, 2010,compliance is achieved if visible emissions do not exceed the applicable visible emissions limitation in §A(1) and(2) of this regulation for more than 2 percent of the unit's operating time in any calendar quarter, during whichtime visible emissions:(i) Do not exceed 40.0 percent opacity, except for 5.0 hours or 0.5 percent of the unit'sduring load changing, soot blowing, startup, or adjustments or occasional cleaning of controlequipment if:(a) The visible emissions are not greater than 40 percent opacity; and(b) The visible emissions do not occur for more than 6 consecutive minutesin any sixty minute period.B. Stationary Internal Combustion Engine Powered Equipment.(1) Definitions. For the purpose of this section:(a) "Idle" means the condition during which the engine is not performing theuseful net work that enables the piece of equipment to accomplish its designated purpose.(b) "Internal combustion engine" (hereafter "engine") means all enginesexcept those used for propulsion of ships orvehicles licensed to operate upon the publichighway within the State, or engines employed solely for agricultural and recreationalpurposes unless they are an integral part of a stationary installation.(2) Emissions During Idle Mode. A person may not cause or permit the discharge ofemissions from any engine, operating at idle, greater than 10 percent opacity.(3) Emissions During Operating Mode. A person may not cause or permit thedischarge of emissions from any engine, operating at other than idle conditions, greater than40 percent opacity.(4) Exceptions.(a) Section B(2) does not apply for aperiod of 2 consecutive minutes after aperiod of idling of 15 consecutive minutes for the purpose of clearing the exhaust system.(b) Section B(2) does not apply to emissions resulting directly from coldengine start-up and warm-up for the following maximum periods:(i) Engines that are idled continuously when not in service: 30minutes;(ii) All other engines: 15 minutes.COMPARISON OF CURRENT OPACITYREQUIREMENTS WITH PREVIOUS REQUIREMENTS (prior to 5/17/10)10CURRENT REQUIREMENTS (effective 5/17/10) PREVIOUS REQUIREMENTS (prior to 5/17/10)operating time, whichever is greater;(ii) Do not exceed 70.0 percent opacityfor more than four(4) six-minute periods,except that coal-fired units equipped with electrostatic precipitators may exceed 70.0 percent opacity for no morethan 2.2 hours; and(iii) On any calendar day, do not exceed the applicablevisible emissions limitation in§A(1) and (2) of this regulation formore than 4.1 hours, during which timevisible emissions do not exceed 40.0percent opacity for more than 1.4 hours and do not exceed 70.0 percent opacity for more than two 6-minuteperiods;(c) For units with a capacity factor equal to or less than 25 percent that operate more than 300hours per quarter, beginning July 1, 2009, compliance with the applicable visible emissions limitation in §A(1) and(2) of this regulation is achieved if,during a calendar quarter, visible emissions do not exceed the applicablestandard for more than 20.0 hours,during which time visible emissions:(i) Do not exceed 40.0 percent opacity for more than 2.2 hours;(ii) Do not exceed 70 percent for more than four 6-minute periods; and(iii) On any calendar day, do not exceed the applicablevisible emissions limitation in§A(1) and (2) of this regulation formore than 4.1 hours, during which timevisible emissions do not exceed 40.0percent opacity for more than 1.4 hours and do not exceed 70.0 percent opacity for more than two 6-minuteperiods; and(d) For units with a capacity factor equal to or less than 25 percent that operate less than 300hours per quarter, beginning July 1, 2009, compliance with the applicable visible emissions limitation in §A(1) and(2) of this regulation is achieved if,during a calendar quarter, visible emissions do not exceed the applicablestandard for more than 12.0 hours,during which time visible emissions:(i) Do not exceed 40.0 percent opacity for more than 2.2 hours;(ii) Do not exceed 70.0 percent opacity for more than four 6-minute periods;and(c) Section B(2) and (3) does not apply while maintenance, repair, or testingis being performed by qualified mechanics.COMPARISON OF CURRENT OPACITYREQUIREMENTS WITH PREVIOUS REQUIREMENTS (prior to 5/17/10)11CURRENT REQUIREMENTS (effective 5/17/10) PREVIOUS REQUIREMENTS (prior to 5/17/10)(iii) On any calendar day, do not exceed the applicablevisible emissions limitation in§A(1) and (2) of this regulation formore than 4.1 hours, during which timevisible emissions do not exceed 40.0percent opacity for more than 1.4 hours and do not exceed 70.0 percent opacity for more than two 6-minuteperiods.B. Determining Violations.(1) For each unit required to operate a COM pursuant to COMAR 26.11.01.10A(1)(a) and (b), each dayduring a calendar quarter when the opacity of emissions from that unit during the calendar quarter or calendarday, as applicable, exceeds the emission limitations in §A(4)(a), (b), (c) and (d) of thisregulation shall constitute aseparate day of violation.(2) A violation of §A(4)(a)(i), (ii), or (iii), §A(4)(b)(i), (ii) or (iii), §A(4)(c)(i), (ii) or (iii), or §A(4)(d)(i),(ii) or (iii), of this regulation, as applicable, that occur on the same day shall constitute separate violations.(3) A daily violation that occurs during the same calendar quarter as a quarterly violation is a separateviolation.C. Fuel Burning Equipment Subject to Federal COM Requirements. Except for owners or operators of fuelburning equipment subject to any federal requirement that mandates operation of a COM and as provided in §D ofthis regulation, the owner or operator of fuel burning equipment required to install and operate a COM maydiscontinue the operation of the COM on fuel burning equipment that is served by a flue gas desulfurizationdevice:(1) When emissions from the equipment do not bypass the flue gas desulfurization device serving theequipment;(2) When the flue gas desulfurization device serving the equipment is in operation;(3) If the owner or operator has demonstrated to the Department's satisfaction, in accordance with 40CFR §75.14, as amended, and all other applicable State and federal requirements, that water vapor is present inthe flue gas from the equipment and would impede the accuracy of opacity measurements; and(4) If the owner or operator has fully implemented an alternative plan, approved by the Department, formonitoring opacity levels and particulate matter emissions from the stack that includes:COMPARISON OF CURRENT OPACITYREQUIREMENTS WITH PREVIOUS REQUIREMENTS (prior to 5/17/10)12CURRENT REQUIREMENTS (effective 5/17/10) PREVIOUS REQUIREMENTS (prior to 5/17/10)(a) A schedule for monthly observations of visible emissions from the stack by a person trainedto perform Method 9 observations; and(b) Installation and operation of a particulate matter CEM that complies with all applicableState and federal requirements for particulate matter CEMs.D. If, for units equipped with a flue gas desulfurization device, emissions bypass the device and are dischargedthrough a bypass stack, the bypass stack shall be equipped with a COM approved by the Department.The following § E was section § B prior to 5/7/10E. Stationary Internal Combustion Engine Powered Equipment.(1) Definitions. For the purpose of this section:(a) "Idle" means the condition during which the engine is not performing the useful net workthat enables the piece of equipment toaccomplish its designated purpose.(b) "Internal combustion engine" (hereafter "engine") means all engines except those used forpropulsion of ships or vehicles licensed to operate uponthe public highway within the State, or engines employedsolely for agricultural and recreational purposes unless theyare an integral part of a stationary installation.(2) Emissions During Idle Mode. A person may not cause or permit the discharge of emissions from anyengine, operating at idle, greater than 10 percent opacity.(3) Emissions During Operating Mode. A person may not cause or permit the discharge of emissionsfrom any engine, operating at other than idle conditions, greater than 40 percent opacity.(4) Exceptions.(a) Section B(2) does not apply for a period of 2 consecutive minutes after a period of idling of15 consecutive minutes for the purpose of clearing the exhaust system.(b) Section B(2) does not apply to emissionsresulting directly from cold engine start-up andwarm-up for the following maximum periods:COMPARISON OF CURRENT OPACITYREQUIREMENTS WITH PREVIOUS REQUIREMENTS (prior to 5/17/10)13CURRENT REQUIREMENTS (effective 5/17/10) PREVIOUS REQUIREMENTS (prior to 5/17/10)(i) Engines that are idled continuously when not in service: 30 minutes;(ii) All other engines: 15 minutes.(c) Section B(2) and (3) does not apply while maintenance, repair, or testing is being performedby qualified mechanics.